International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 06 Issue: 05 | May 2019
p-ISSN: 2395-0072
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The CBR values of modified samples have shown tremendous increment in 7 days CBR values when compared to that of 1 day CBR values. It is found that the modified samples has enough CBR value and they are categorised as Good-Fair material. Hence, they can be used as the soil subgrade material for the highway pavements.
Journal of Engineering and Applied Sciences, 6(5), 295 – 298. [4]
Joydeep Sen and Jitendra Prasad Singh. 2015. Stabilization of Black Cotton Soil using Bio-Enzyme for a highway material. International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET), 4(12), 12453 – 12459.
[5]
S. M. Lim, D. C. Wijeyesekera, A. J. M. S. Lim and I. B. H. Bakar. 2014. Critical Review of Innovative Soil Road Stabilization Techniques. International Journal of Engineering and Advanced Technology (IJEAT), 3(5), 204 – 211.
[6]
Sandeep Panchal, Md. Mohsin Khan and Anurag Sharma. 2017. Stabilization of Soil using Bio-Enzyme. International Journal of Civil Engineering and Technology (IJCIET), 8(1), 234 – 237.
[7]
Puneet Agarwal and Suneet Kaur. 2014. Effect of BioEnzyme Stabilization on Unconfined Compressive Strength of Expansive Soil. International Journal of Research in Engineering and Technology (IJRET), 3(5), 30 - 33.
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A.U. Ravi Shankar, Harsha Kumar Rai and Ramesha Mithanthaya I. 2009. Bio-Enzyme Stabilized Lateritic Soil as a Highway Material. Journal of the Indian Roads Congress, Paper No. 553, 143 – 151.
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H.N. Ramesh and Sagar S.R. 2015. Effect of Drying on the Strength Properties of Terrazyme Treated Expansive and Non-Expansive Soils. 50th Indian Geotechnical Conference, 1 – 12.
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Usha Patel, Shalini Singh and Shivani Chaudhari. 2018. Improvement of Strength Characteristics of Bio-Enzyme Terrazyme Treated Expansive Soil by Gypsum as an Additive, International Journal of Advance Research and Innovative Ideas in Education (IJARIIE), 4(2), 1005 1012.
12. CONCLUSION Engineers often face the problem of constructing facilities on or with soils, which do not possess sufficient strength to support the loads imposed upon them either during construction or during the service life of the structure. The poor engineering performance of such soils has forced Engineers to attempt to improve the engineering properties of poor quality soils. Soil stabilization is the alteration of one or more soil properties to create an improved soil material possessing the desired engineering properties. Recently many Bio-enzymes have emerged as cost effective stabilizers for soil stabilization. Three different types of soil have been selected and collected. Various laboratory tests have been conducted on all the three soil samples to determine physical, index and mechanical properties of the soil samples. From the UCS and CBR values of the samples, it has been concluded that the clay and red soil is more suitable as a soil subgrade material for highway pavements. The marine soil sample is more suited as a subgrade material when treated with 1.5 ml / 5 kg of bio-enzyme dosage with curing periods of 7 days. The combination of this marine soil sample will be more economical in design. Thus, the stabilized soil samples can be used as a subgrade material for the construction of highway pavements.
13. FUTURE SCOPE OF THE RESEARCH WORK Directions of future research includes the analysis of strength parameters such as UCS and CBR values in the modified samples with placement of geo-synthetics such as geogrids, geocells, geonets, geotextiles at alternate depths. This will give further more strength characteristics in the selected soil samples.
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Nader Hataf and Reyhaneh Jamali. 2018. Effect of FineGrain Percent on Soil Strength Properties Improved By Biological Method, Geomicrobial Journal.
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Tanveer Ahmed Khan and Mohd Raihan Taha. 2015. Effect of Three Bioenzymes on Compaction, Consistency Limits, and Strength Characteristics of a Sedimentary Residual Soil. Advances in Materials Science and Engineering, 2015.
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C.Venkatasubramanian and G.Dhinakaran. 2011. Effect of Bioenzymatic Soil Stabilisation on Unconfined Compressive Strength and California Bearing Ratio.
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